package com.shujia;

import java.io.*;

public class ExtendsData {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new FileReader("data/students.txt"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("data/bigstudents.txt"));
        String line = null;
        while ((line=br.readLine())!=null){
            for(int i=1;i<=10000;i++){
                bw.write(line);
                bw.newLine();
                bw.flush();
            }
        }

    }
}
